Cranks fine but runs rough and dies.

1999 f150 4.6 ext cab. vehicle cranks up fine runs rough and dies, I need to hold the thottle open to at least 1100 rpm or the engine dies. The batt and check engine lights are on, when starting cold the choke doesn't seem to be trying to hold any high idle.

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The oxygen sensors are located under the vehicle on the exaust manafold unless you are getting a certain code wich u should be getting if they are malfuctioning then it could be something else.have you change the fuel filter? It also might need a tune up new plugs wires air filter ext

Check the vacuum hose attached to the fuel pressure regulator under the hood next to your intake pull it off and see if any fuel is present, if there is replace regulator.you may have to tap hose with your finger to get any fuel out or start vehicle run until hot then shut off and recheck if no fuel present in vacuum line let me know and we can try something else.